Parallel operation of core drilling machine and welding with MAG machines using the pulse process?
Frage:
Parallel operation of core drilling machine and welding with MAG machines using the pulse process?
Antwort:
Due to the large number of different welding machines and the unclear ignition voltages, we must follow the manufacturers' recommendations to work with electronic systems without high-voltage ignition.
Nevertheless, we paid particular attention to ensuring high interference immunity during the development of our core drilling machines. The electronic components in the machine were tested in the laboratory with an air discharge (test voltage 15,000 V) and a contact discharge (test voltage 8,000 V) and were found to be in working order after the test. Welding machine manufacturers use different pulse voltages for igniting the welding electrode, so our machine may still function if welding machines from one manufacturer's pulse method are used simultaneously, but the electronics will be destroyed by another.
The ambient conditions can be optimized to enable use with welding machines.
1. It must be ensured that the welding machine is in technically perfect working order, i.e. in particular radio interference suppression measures, protective conductor connection, ignition voltage setting, etc.
2. The workshop installation must be set up in accordance with the applicable regulations (especially protective devices).
3. The welding circuit must be set up correctly (ground connection); it is not permissible for welding current to flow via the protective conductor of the core drilling machine.
4. The core drilling machine must be in technically perfect working order, especially the protective conductor connection.
However, for the reasons stated above, we cannot provide a guarantee. If the machine is switched off (magnet switch off), the electronics will not be damaged by welding. Only the protective conductor of the machine can burn out if the ground terminal is missing (see point 3 above). If the electronics are defective, the fuse in the mains installation will probably also blow. The electronics themselves cannot be repaired. Other parts of the machine are not affected. Other errors that can occur during ignition but do not result in a defect:
• Drill motor starts briefly during the ignition process (only if the machine is in restart lockout).
• Drill motor changes speed.